[Extensions] Update ExtensionResourceRequestPolicyTest to manifest v2

ExtensionResourceRequestPolicyTests have been updated to manifest v2.
Remove the allowance for manifest v1 extensions.

Bug: 816679
Change-Id: I05069412df2ff5bc93cdc6299046b0389e0ad33d
Reviewed-on: https://chromium-review.googlesource.com/1022002
Reviewed-by: Karan Bhatia <karandeepb@chromium.org>
Commit-Queue: Devlin <rdevlin.cronin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#552455}
1 file changed